prevent variable length array bound evaluates to non-positive value

cms-sw · Mar 13, 2022 · 5755ec1 · 5755ec1
1 parent a41f340
commit 5755ec1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/RecoTracker/DeDx/plugins/HLTDeDxFilter.cc b/RecoTracker/DeDx/plugins/HLTDeDxFilter.cc
@@ -115,6 +115,11 @@ bool HLTDeDxFilter::hltFilter(edm::Event& iEvent,
 
   bool accept = false;
   int NTracks = 0;
+
+  // early return
+  if (trackCollection.empty())
+    return accept;
+
   //fill local arrays for eta, phi, and pt
   float eta[trackCollection.size()], phi[trackCollection.size()], pt[trackCollection.size()];
   for (unsigned int i = 0; i < trackCollection.size(); i++) {